Menu

Constantine Cannon has recovered more than $5 billion in damages and tens of billions of dollars more in injunctive relief.

Among the first in the country to bring a claim under

the whistleblower provisions of the Dodd-Frank Act.

Included as a Tier 1 ranked firm

in U.S. News Best Law Firms.

Regularly interviewed by and quoted in:

Included in the International

Who's Who listing of the

world's leading lawyers.

Experienced Whistleblower Lawyers

Why Constantine Cannon?

The Constantine Cannon Whistleblower Lawyer Team has extensive experience representing whistleblowers under the qui tam provisions of the False Claims Act, the Dodd-Frank Act, the IRS Whistleblower Law, and the vast array of other federal and state whistleblower laws. What distinguishes us from other whistleblower lawyers and whistleblower law firms is our unmatched combination of attorneys with a long and unsurpassed track record of whistleblower successes, our substantial resources to handle any type of case against any size defendant in any industry, and our depth of experience in both whistleblower litigation and government enforcement.

Record of Success

Over the past decade, our whistleblower attorneys have acted as lead counsel to recover roughly $1.3 billion for the government and $240 million in whistleblower awards for whistleblower clients. This is in addition to the more than $5 billion in damages and tens of billions of dollars more in injunctive relief we have recovered for the firm’s other clients, including two of the top five antitrust settlements in US history. Click here for a listing of the major whistleblower successes our whistleblower lawyers have secured.

Substantial Resources

Constantine Cannon is an internationally recognized full-service litigation law firm with roughly 50 lawyers in four offices located in New York, Washington, San Francisco and London. We are able to commit resources to a case for many years, and to go to trial if necessary to vindicate our clients. The Government typically is unable to spare more than a couple of attorneys for that kind of fight. They count on whistleblower attorneys to fill that resource gap, and Constantine Cannon, with 15 dedicated whistleblower lawyers and a collective 100 years of experience in whistleblower cases, is able to do so.

In addition to our extensive whistleblower experience, our attorneys also specialize in antitrust, complex commercial litigation, intellectual property and compliance. The firm’s experience spans across multiple industries including healthcare, banking, pharmaceuticals, securities and commodities trading, telecommunications, insurance, high tech, the Internet and government contracting. Click here to learn more about our whistleblower lawyer team, and click here for a complete roster of Constantine Cannon’s US and European lawyers.

Deep Expertise

Constantine Cannon’s 15 whistleblower attorneys have substantial experience representing whistleblowers under the various whistleblower statutes — including federal, state and local False Claims Acts, the Dodd-Frank/SEC/CFTC whistleblower law, and the IRS Whistleblower Program — and have brought cases in virtually every state in the country. No matter what industry our whistleblower clients are employed in, chances are good that a Constantine Cannon attorney is familiar with it. Included among the dozens of whistleblower matters our team is currently handling or investigating (or has recently handled) are:

Accounting Fraud

Bid-Rigging

Bribery

Commodities/Securities Manipulation

Failure to Comply With Government Requirements/Standards

False Government Certifications

Financial Services Fraud

Government Contracting Fraud

Government Grant Fraud

Government Overcharges

Illegal Kickbacks

Illegal Upcoding

IRS Fraud

Medicare/Medicaid Fraud

Risk Adjustment and other Medicare Part C Fraud

Medicare Part D Fraud

Monopolization

Off-Label Marketing

Price-Fixing

Securities Fraud

Selling Defective Products

Stark Law Violations

Unqualified, Unnecessary Healthcare Services

Government Connections

Constantine Cannon has a strong connection to government enforcement as many of our attorneys prior to joining the firm have held senior positions at the Department of Justice, US Attorney’s Office, Federal Trade Commission, US Senate Judiciary Committee, New York State Attorney General’s Office, Manhattan District Attorney’s Office and New York Stock Exchange. Three members of our firm are former Assistant United States Attorneys, with one of them overseeing the office’s False Claims Act unit. It is this deep-rooted government relationship that has caused dozens of government agencies to hire the firm’s attorneys to represent them in their False Claims Act cases.

Geographic Reach

With offices on both coasts and in London, Constantine Cannon has an unmatched geographic presence to provide a home base for cases arising anywhere in the United States or Europe. Our attorneys have litigated and worked with government enforcers in nearly every state in the country, and bring first-hand local knowledge of courts, judges, and federal and state agencies that is invaluable when pursuing a whistleblower case. Our European presence and experience is equally widespread. Our attorneys in London and our other offices speak Spanish, French, Italian, German, Hindi, Gujarati, Korean, Polish, Tamil, Urdu, Hungarian, Bulgarian, Armenian, Serbian and Croatian.